AI 173 then UA 235 at San Francisco
New Delhi → San Francisco → Houston
Timetable, San Francisco time
07:00AI 173 from New Delhi at the gate
18:00UA 235 to Houston leaves the gate
11 h apart on the timetable
The last days
AI 173 and UA 235 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.